And nobody cares in practice, the 109s can stay up high and jerk each other off while Soviet airforce annihilate German ground targets. Coupled with the still limited visibility problem against other air planes and the 109's appalling high speed maneuverability, there's not much practical advantage for the 109's high altitute performance.

So what you are saying that the devs should artificially gimp German planes with BS engine time limit to make it fair for the Russians?
7. Comments containing profanity, personal insults, accusations of cheating, excessive rudeness, vulgarity, drug propaganda, political and religious discussion and propaganda, all manifestations of Nazism and racist statements, calls to overthrow governments by force, inciting ethnic hatred, humiliation of persons of a particular gender, sexual orientation or religion are not allowed and will result in a ban.
Violations of this rule will result in the following:
First warning

Yeah sometimes while flying I'd suddenly fight myself inside a dogfight. Perhaps we can have optional extended visibility, we can also copy War Thunder's style of having simplified planes models at a distance.

I'd say that initial roll acceleration is way more important that maximum roll rate. Anyway, the early La5 was known to have very heavy ailerons at high speed, and was sluggish in initiating roll, currently it rolls like a 190.

Doubt it, had the 262s been in service in large number the Americans and the British would have accelerated the developement of the P80 and the Meteor, respectively, and jets combat would have been a common sight toward the end of the war.
Point is tho, I doubt the 262 would have changed the outcome.